investors try to let gays cells of the economy, not just the u.s., but the global economy. a lot of news, and assault team coverage with nicole petallides. once again standing by the new york stock exchange. a big sell-off. phil flynn at the cme tracking down the commodities, especially metals. jo ling kent is here with a very troubling story about china that we are following, but first to you, nicole. your headline please. >> reporter: to the big deal here is watching the volatility. we had a lot of 200. swings in the last 21 days since ben bernanke and his testimony may 22nd. half of those, ten of the 21 actually had 200. swings. the volatility is here and today you are obviously seeing a bigger move unusual. 350 points to the downside. cheryl: and an unusual move. that is how you would characterize this. >> reporter: absolutely an unusual move. essene the volatility of 10200, but not 350. cheryl: you will get back to you in a moment. phil flynn at the cme. >> reporter: it is a metals meltdown. what temperature doubles milton mack probably when the fed starts talking abou